1487172171 has 16 divisors (see below), whose sum is σ = 2075996160. Its totient is φ = 945722400.

The previous prime is 1487172151. The next prime is 1487172179. The reversal of 1487172171 is 1712717841.

It is not a de Polignac number, because 1487172171 - 2⁵ = 1487172139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1487172179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95755 + ... + 110196.

It is an arithmetic number, because the mean of its divisors is an integer number (129749760).

Almost surely, 2^1487172171 is an apocalyptic number.

1487172171 is a deficient number, since it is larger than the sum of its proper divisors (588823989).

1487172171 is a wasteful number, since it uses less digits than its factorization.

1487172171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206066.

The product of its digits is 21952, while the sum is 39.

The square root of 1487172171 is about 38563.8713175947. The cubic root of 1487172171 is about 1141.4417408265.

The spelling of 1487172171 in words is "one billion, four hundred eighty-seven million, one hundred seventy-two thousand, one hundred seventy-one".